Glavne vloge:

Buzz Aldrin  >  Himself - Apollo 11 Lunar Module Pilot
Neil Armstrong  >  Himself (archive footage)
Mike Collins  >  Himself - Apollo 11 Command Module Pilot (as Mike Collins)
Charles Duke  >  Himself - Apollo 11 Cap-Com (as Charlie Duke)
Dave Scott  >  Himself - Apollo 9 Command Module Pilot
Samuel West  >  Himself - Narrator (voice)
Ron Huston  >  Himself - Neil's Boss, University of Cincinnati
Janet Armstrong  >  Herself - Neil's First Wife
Mark Armstrong  >  Himself - Neil's Younger Son
Dean Armstrong  >  Himself - Neil's Brother
Rick Armstrong  >  Himself - Neil's Elder Son
Pat Collins  >  Herself - Wife of Mike Collins
Kotcho Solacoff  >  Himself - Neil's Best Friend
Carol Armstrong  >  Herself - Neil's Second Wife
June Hoffman  >  Herself - Neil's Sister